Suppression of tricritical point of {sup 3}He-{sup 4}He mixture in the presence of dilute impurities

Journal Article · Wed Mar 31 23:00:00 EST 1993 · Bulletin of the American Physical Society

OSTI ID:243824

Sangbo, K; Ma, Jian; Chan, M H.W. ^[1]

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1. and others

The superfluid density of {sup 3}He-{sup 4}He mixture in 98% porous aerogel was measured by using torsional oscillator method. The measurements covered the overall range of mixture ratios. The main difference with the bulk mixture system is that the lambda line is detached from the {sup 3}He-{sup 4}He phase separation curve. The lambda line is found to extend down the OK at about 4% {sup 4}He mixture. This result implies an exciting possibility of miscible superfluid of {sup 3}He-{sup 4}He at low {sup 4}He concentration.

• OSTI ID: 243824
• Report Number(s): CONF-9304297--; CNN: Grant DMR-9008461
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 2 Vol. 38; ISSN 0003-0503; ISSN BAPSA6
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BINARY MIXTURES
HELIUM 3
HELIUM 4
PHASE TRANSFORMATIONS
POROUS MATERIALS
SUPERFLUIDITY